CLEAN : Solar Impulse 2 leaves Egypt for final leg of world tour

The video discusses the Solar Impulse project, highlighting its focus on energy and a better world. It describes the challenges of an upcoming flight, including high temperatures and the need to fly at maximum altitude with an oxygen mask. The flight is expected to last 48 hours, making it an exhausting journey.

What equipment will the pilot need to use at maximum altitude?

What challenges does the pilot anticipate during the flight?